97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 1998-2008, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*/
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#include "LETypes.h"
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#include "LEInsertionList.h"
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U_NAMESPACE_BEGIN
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#define ANY_NUMBER 1
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struct InsertionRecord
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{
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InsertionRecord *next;
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le_int32 position;
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le_int32 count;
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LEGlyphID glyphs[ANY_NUMBER];
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};
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LEInsertionList)
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LEInsertionList::LEInsertionList(le_bool rightToLeft)
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: head(NULL), tail(NULL), growAmount(0), append(rightToLeft)
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{
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tail = (InsertionRecord *) &head;
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}
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LEInsertionList::~LEInsertionList()
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{
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reset();
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}
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void LEInsertionList::reset()
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{
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while (head != NULL) {
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InsertionRecord *record = head;
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head = head->next;
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LE_DELETE_ARRAY(record);
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}
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tail = (InsertionRecord *) &head;
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growAmount = 0;
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}
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le_int32 LEInsertionList::getGrowAmount()
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{
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return growAmount;
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}
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LEGlyphID *LEInsertionList::insert(le_int32 position, le_int32 count, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return 0;
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}
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InsertionRecord *insertion = (InsertionRecord *) LE_NEW_ARRAY(char, sizeof(InsertionRecord) + (count - ANY_NUMBER) * sizeof (LEGlyphID));
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if (insertion == NULL) {
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success = LE_MEMORY_ALLOCATION_ERROR;
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return 0;
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}
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insertion->position = position;
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insertion->count = count;
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growAmount += count - 1;
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if (append) {
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// insert on end of list...
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insertion->next = NULL;
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tail->next = insertion;
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tail = insertion;
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} else {
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// insert on front of list...
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insertion->next = head;
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head = insertion;
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}
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return insertion->glyphs;
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}
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le_bool LEInsertionList::applyInsertions(LEInsertionCallback *callback)
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{
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for (InsertionRecord *rec = head; rec != NULL; rec = rec->next) {
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if (callback->applyInsertion(rec->position, rec->count, rec->glyphs)) {
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return TRUE;
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}
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}
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return FALSE;
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}
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U_NAMESPACE_END
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